After long time of problem solving I can finally run E-ink display on my RedBearLab BLE v2. I got some problems to run it with hardware SPI, so I had to use different pins and custom shiftOut function for data proper transfer. The final design doesn’t look like an Apple Watch or nice Samsung Watch but I hope it will be functional.
The every part which will be used:
- 3D printed case in black PLA
- RedBearLab Nano v2
- Vibrator motor
- Pushbutton 6×6 mm
- LiPo 301530 100mAh battery
- TP4056 LiPo charger
- uUSB connector (i hope there will be enough space for this)
- Some hot glue, wires and resistors for voltage division and measuring
Stand By mode should refresh time every 10th minute, not every 10 minutes! When I will receive some message, it will display a logo of the app, sender or title and the content. I will play with this when it will be finished hardwarely.
I expect one week of usage.
I consider to make custom pcb with all the parts soldered on the only one board, so there will be more space for battery and it will be thinner and nicer.